It is both a flexible element of the suspension and a guide for the suspension. It is hinged at one end with frame, which can convey various forces and moments and determine the trajectory of the wheel. At the same time, it itself has a certain role in the role of friction damping.

Our tricycle uses integrated rear axle and brake to guarantee that the vehicle has a strong enough bearing capacity. This type of rear axle is not easy to break and can keep using than the semi-closed type rear axle.